Dimitrios Karras owns Ares Armor, a shop that sells various parts to build a rifle from scratch.

KSWB reported federal agents were investigating the shop but not for the merchandise, for the customers.

Karras told KSWB the Bureau of Alcohol, Tobacco and Firearms threatened to close the shop if he didn’t give the names of 5,000 patrons who have purchased the main parts to build an AR-15.

“They were going to search all of our facilities and confiscate our computer and pretty much shut our business down,” Karras told KSWB. “The government invades our privacy on a daily basis and everyone thinks it’s OK. This is one of those situations where hopefully the governmental institutions will come in, say this is protected and no you’re not taking it from them.”